Riri Woo is a Retro Matte lipstick which has vibrant and great color payoff with a matte finish. I really love this lipstick and it is a great red color that I believe is perfect for all skin tones. I have only one problem with this it - it doesn't apply smoothly. This is common with most matte lipsticks since they are of a drier formula. Other than that this lipstick is absolutely great. It has a longer staying power than the other MAC lipstick finishes (except the MAC Pro Longwear lipcremes). It also doesn't bleed out which is great if you're the kind of girl who doesn't use lip liners.
Loving this lipstick so much. If you're looking to buy a matte, red lipstick this would be it!